R. ZimmermannDortmund, April 20061 OPERA physics motivation - CNGS physics motivation - CNGS OPERA...

Click here to load reader

  • date post

    01-Jan-2016
  • Category

    Documents

  • view

    223
  • download

    3

Embed Size (px)

Transcript of R. ZimmermannDortmund, April 20061 OPERA physics motivation - CNGS physics motivation - CNGS OPERA...

  • OPERA physics motivation - CNGS OPERA detector appearance physics program 2006

    Dortmund, April 2006

  • physics motivation provide an unambiguous evidence for oscillation in the region of atmospheric neutrinos by looking for appearance in a pure beam search for subleading e osc.beam CNGS (1999)CNGS1 (2000)SK: atmospheric neutrino anomalyinterpretable as oscillation CHOOZ: no e oscillation disappearance

    Dortmund, April 2006

  • CNGS beamHall CHall BGran Sasso underground labOPERACERN 732 kmAt given distance:nm flux optimized for the maximal number of nt CC interactions

    Dortmund, April 2006

  • CNGS beam commissioning : may/june 06Beam delivery : mid july 06

    Dortmund, April 2006

  • The OPERA collaboration37 INSTITUTIONS, ~160 PHYSICISTSLAPP, LAL,IPNL, IRESINR ITEPJINR, ObninskZagrebLAquila, Bari, Bologna, Napoli, Padova, Roma, Salerno, LNF, LNGS BernNeuchatelBrusselsHamburg, Rostock,Mnster,Berlin, HagenSofiaAichi, TohoKobe, NagoyaUtsunomiyaTechnion HaifaIHEP BeijingShandongGyeongsang University

    Dortmund, April 2006

  • The detectorPbemulsion layersnt1 mm- Based on the concept of the Emulsion Cloud Chamber (ECC)- Sandwich of 56 Pb sheets 1mm + emulsion layers- large mass for neutrino interactions - high spatial resolution (x 1m, 1mrad)ECC = stand-alone detector: neutrino interaction vertex kink topology reconstruction momentum measurements for hadrons(multiple scattering) / separation at low energy (dE/dx) energy measurements for e,8.3kg10 X010.2 x 12.7 x 7.5 cm3basic unit: brickplastic

    Dortmund, April 2006

  • improved techniques developed

    Dortmund, April 2006

  • supermodule8 mTarget TrackersEmulsion analysis:Vertex, decay kink e/g ID, mult. scat., kinematicsPb/Em. brick8 cmElectronic detectors:Brick findingLink to mu ID,Candidate eventSpectrometerbrick cannot do: trigger for neutrino interaction identification and momentum + charge measurementHybrid detectorPb/Em. targetmuon ID, charge and pExtract selected brick

    Dortmund, April 2006

  • Detector structure

    Dortmund, April 2006

  • 31000* Average target mass (additional 10K events in the OPERA magnets)CC interactionsEvent rates in 5 years for 4.5 x 1019 pot /yearin shared modeEvent rates / integrated rates:

    OPERA*1.597 ktonsCC23300NC7000CC490eCC186eCC16

    m2OPERA1 x 10-3 eV2242 x 10-3 eV2953 x 10-3 eV2214

    Dortmund, April 2006

  • Target tracker7mTarget SM1 completed Oct. `05Target SM2 completed June `067000m in total (X,Y)32256 sc. Strips 7m x 2.5cm x 1cm496 modules (4X+4Y per plane)1000 MaPMT (Hamamatsu 64ch.)Brick wall:Mech. Accuracy
  • Mechanical structureCompletedMagnet 1&2+ RPCCompletedXPC 1&2 , HPT 1&2Completedall TT & Brick wallsInstalledBMS 1 completedBMS 2 in install.

    Dortmund, April 2006

  • DAQGigabit ethernetwork (1200 nodes)All parts availableevent time stamp using GPS clock Ready for installationHeart of DAQ:Mezzanine (CPU,Memory, FPGA, clockReceiver, ethernet)Final version in testTT: 992 boards produced(ADC, DAC, HV, test pulse)TT DAQ runningRPC: 54 needed (prod.)HPT: 96 TDC boards neededall produced

    Dortmund, April 2006

  • T.T.

    RPC

    PT

    XPC

    Veto

    16

    2

    2

    8

    31

    22

    6

    2

    T.T.

    RPC

    PT

    XPC

    16

    2

    8

    31

    22

    6

    2

    DHCPDNSManager

    firewall

    General Server

    ORACLE D.B. Server & replicant

    Internet

    Optical link

    CISCO 2950

    CISCO 2950

    CISCO 3750

    CISCO 3750

    TTDAQ 1

    RPCDAQ 1

    PTDAQ 1

    TTDAQ 2

    RPCDAQ 2

    PTDAQ 2

    Externallab

    Undergoundlab

    GPS clockPC

    GPS antenna

    E/O

    E/O

    PT trigger

    XPC trigger

    RPC trigger

    Veto trigger

    PT trigger

    RPC trigger

    XPC trigger

    3

    3

  • Brick Assembling Machine~ 23 million lead plates + emulsion sheets~ 206,000 bricks at a rate of ~ 2 bricks/minuteBAM site underground :completed november 05

    Dortmund, April 2006

  • Brick Manipulator SystemDrum for brick transferStorage CarrouselBMS1 rock side installed, being commissioned

    Dortmund, April 2006

  • ScanningEuropean system: 0.3 m spatial resolution 2 mrad angular resolution 20 cm/h scanning speed achieved With 25 systems (9labs) 15 bricks/day (1 shift)Japan + Europe

    Dortmund, April 2006

  • physics potential detection efficiencies(in % and including BR)kink > 20mrad impact parameter I.P. > 5 to 20 m

    Dortmund, April 2006

  • Expected number of eventsfull mixing, 5 years run @ 4.5 x1019 pot / year() with CNGS beam upgrade (X 1.5)

    m21.9 x 10-3 eV22.4 x 10-3 eV23.0x 10-3 eV2BKGD

    1.8 kton fiducial6.6(10)10.5(15.8)16.4(24.6)0.7(1.1)+ improved brick finding+ 3 prong decay8.0(12.1)12.8(19.2)19.9(29.9)1.0(1.5)Background reduction 8.0(12.1)12.8(19.2)19.9(29.9)0.8(1.2)

    Dortmund, April 2006

  • Discovery potential (4) vs beam intensityOpera nominal(but with 3 events and new BF )Opera with beam upgrade and 30% bck reductionOpera, with beam upgrade (1.5) Opera with 30% bck reduction90 % CL Sensitivity F&CSK 90% CL(L/E analysis)

    Dortmund, April 2006

  • physics program 2006OPERA foresees the completion of the filling with bricks of SM1 beginning of august 2006physics run after completion and commissioning of CNGS beam:low intensity run integrating 0.3 x 1019 pot (intensity limitedto 2 x 1017 pot/d 15 interactions/d) after beam complete commissionedrecord ~220 interactions + ~500 from interact. in surrounding material2.normal high intensity run (~4 x 1013 pot/cycle) integrating 1019 pot after SM1 complete filled

    Dortmund, April 2006

  • end

    Dortmund, April 2006

  • Sin22q13 sensitivityAssuming : 23=/4, m223 = 2.5 x 10-3 eV2

    Dortmund, April 2006

  • CNGS n T2K complementary

    Dortmund, April 2006

  • Expected number of BG events (5 years)Charm BG id by dE/dx reduces BG by 40%Large angle scatteringIncl. nuclear form factors give factor 5 lessHadronic BGComparision of FLUKA with CHORUS data and GEANT 4 Reduction of uncertainty by 15%

    (in red : possible improvements) e htotalCharm background.210 .117.010 .007 .162 .160 .382 .284Large angle scattering.116 .023.116 .023Hadronic background.093 .093.116 .116.209 .209Total per channel.210 .117.219 .123.278 .276.707 .516

    Dortmund, April 2006

  • Tau search in SuperK

    Dortmund, April 2006

    Wahrscheinlichkeiten gewichten mit WQ